DeepSeek V4 Flash 0731 vs GLM 5.3 Flash: side-by-side summary

DeepSeek V4 Flash 0731 and GLM 5.3 Flash are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.

DeepSeek V4 Flash 0731, from DeepSeek, has a 1,310,720-token context window and is priced at $0.03/M tokens input, $0.075/M tokens output on OpenRouter.

GLM 5.3 Flash, from Z.ai, has a 1,048,576-token context window and is priced at $0.075/M tokens input, $0.25/M tokens output on OpenRouter.

Context window

• DeepSeek V4 Flash 0731: 1,310,720 tokens
• GLM 5.3 Flash: 1,048,576 tokens

Price

• DeepSeek V4 Flash 0731: $0.03/M tokens input, $0.075/M tokens output
• GLM 5.3 Flash: $0.075/M tokens input, $0.25/M tokens output

Provided by

• DeepSeek V4 Flash 0731: DeepSeek
• GLM 5.3 Flash: Z.ai

• DeepSeek V4 Flash 0731 model details, providers and pricing
• GLM 5.3 Flash model details, providers and pricing